Government Propaganda “Awareness” Videos Target Bombers and…Photographers ?!, article and video.
It may not be quite as bad fear-mongering as the "threat color codes" they had ("it's orange today, what should I do!?"), but it's stupid. There is no evidence that terrorists scope out areas with cameras beforehand, and if they do, I think they can hide it better than the hobby- or tourist-photographer you'll notice.